SQP32-35-21 Tokyo Keiki Double Vane Pump | 210 Bar

Product Overview:

Engineered for mid-to-high pressure industrial applications where acoustic performance is critical, the SQP32-35-21-86D0-18 double vane pump (representing the comprehensive SQP21, SQP31, and SQP42 series) delivers exceptionally low-noise operation. This is achieved through its advanced intra-vane architecture and precision-machined cam profiles that virtually eliminate pressure ripples. By housing two independent displacement cartridges on a single drive shaft, it provides a highly compact, dual-circuit power source for complex hydraulic systems. Prior to dispatch, every single unit is subjected to stringent 100% full-load simulated testing for pressure hold, flow consistency, and thermal stability. Machined to exact industry dimensions, it offers flawless, drop-in interchangeability with original Tokimec (Tokyo Keiki) SQP series pumps, making it the premier cost-effective upgrade for injection molding and machine tool applications.

Technical Specifications

• Model Code: SQP32-35-21-86D0-18 (Compatible with SQP21-14-11, SQP42-50-17 series variants)

• Pump Type: High-performance, low-noise double fixed displacement vane pump

• Front Pump Displacement (P1): 112 cm³/rev (Equivalent to SQP3 series 35 US GPM cartridge)

• Rear Pump Displacement (P2): 67 cm³/rev (Equivalent to SQP2 series 21 US GPM cartridge)

• Max Working Pressure: 21 MPa (210 bar / 3000 psi)

• Max Speed: 1800 RPM

• Control Type: Double fixed displacement (dual independent outputs)

• Drive Shaft: Standard straight cylindrical shaft with parallel key

• Direction of Rotation: Clockwise (Viewed from the shaft end, standard right-hand)

• Port Configuration: Common suction port, independent high-pressure delivery ports (86D0 defines specific flange and angular orientation)

• Recommended Oil Viscosity: 15 – 54 cSt (Optimal operating temp: 30℃ – 50℃)

Key Technical Advantages:

• Ultra-Low Noise Operation: The specialized intra-vane design, combined with smoothly profiled metering notches, neutralizes fluid pulsation and pressure spikes. This results in operating noise levels significantly lower than standard industrial vane pumps, even at peak 210 bar pressures.

• Space-Saving Dual Circuitry: Driving two independent pumps from a single electric motor drastically reduces the overall footprint of the hydraulic power unit. It simplifies piping and eliminates the need for secondary motors or splitters.

• True OEM Interchangeability: Manufactured to precise original tolerances, the mounting pilots, flange bolt patterns, and internal components are 100% interchangeable with Tokimec/Tokyo Keiki SQP units, enabling instant plug-and-play replacement.

• Modular Cartridge Construction: Both the front and rear pumping elements are contained within independent, pre-assembled cartridge kits. Maintenance teams can easily extract and replace these cartridges in minutes without disconnecting the main housing from the fluid lines, minimizing costly downtime.

Application Areas:

• Plastic Molding Machinery: Dual-circuit hydraulic systems for clamping and high-flow injection stages in medium to large injection and blow molding machines.

• Metal Forming & Die Casting: Main and auxiliary hydraulic power units for aluminum die-casting machines, hydraulic shears, and press brakes.

• Industrial Machine Tools: Clamping mechanisms and main drive control circuits in high-precision CNC lathes and machining centers.

• Custom Power Units: Stationary industrial Hydraulic Power Units (HPUs) requiring synchronized or staged multi-actuator operations.

Expert Maintenance Tips:

• Essential Dual-Chamber Priming: Because this double pump draws a large fluid volume, both the front and rear pump cavities must be manually filled with clean hydraulic fluid before the first start-up. Dry running is strictly prohibited as it will cause instant, irreversible damage to the cam rings and port plates.

• Suction Line Cavitation Prevention: With a common suction port feeding two displacement cartridges, intake flow velocity is high. Ensure the suction line is generously sized and leak-free. The suction strainer capacity must be at least 2.5 times the combined maximum flow of both pumps to prevent cavitation and associated noise.

• Shaft Alignment & Torque Verification: Always use a flexible coupling and ensure concentricity alignment (TIR) between the motor and pump shafts is within 0.1 mm. Furthermore, verify that the combined peak torque—when both pumps operate at maximum pressure simultaneously—does not exceed the maximum allowable torsional limit of the prime mover’s drive shaft.